FTP issue

Everything installed fine and ISPConfig works normally. But I can't connect to ftp from outside (from other machine in lan), when i try to connect localy "ftp localhost" in putty everything shows ok, and i can login, but when i connect from other machine using total commander i get "No response (timeout)" error.

This looks fine. FTP is listening on all IP addresses and it is not blocked by a firewall on the server. Are the other machines in the same network or is there a router between your server and these machines?

There are windows server 2003 on this network. Windows is the main machine for now, but I want to migrate to linux, but how can this interfere if i'm using IP address when connecting to server? all ip addresses in my lan are static so theere should be no conflicts.